Cov ntsia hlau liab qab muaj zog dua, ua haujlwm tau zoo thiab muaj kev txhim kho zoo ib yam li cov ntsia hlau zoo tib yam, tab sis cov ntsia hlau liab qab nrog cov pob khawm sib txawv ua rau cov ntsia hlau sib xyaw ua ke rau lub qab nthab, cov ntsia hlau sib xyaw rau cov kav dej, cov ntsia hlau sib xyaw rau kev tiv thaiv hluav taws, cov ntsia hlau sib xyaw rau cov ntoo keel.